
Last time I was worrying about acorns, I was mostly on about RRC 14/7. This is the other ‘heavy’ acorn. Many of the specimens on the market do seem ‘heavy’ for being a 1/24th piece of a 265g as, or at least a quick scan suggests, but the ANS specimens are lighter: 11.75-13.9g. They are not so heavy that they seem particularly problematic in the weight standard, cf. the ANS uncia specimens of the series which are all much heavier.
My interest was peaked by how they show up in this hoard:
I’m also sure I’m being influenced by how RRC 14s and 18s are often found in hoards together on their own; another great publication surveying this phenomenon is online.
Here’s Burnett 1977 on the importance of the above hoard:

If the statement about the semuncia being contemporary with the Roma/Victory didrachms is true this would pull this hoard’s date down to the end of 1st Punic War based on Burnett’s 2006 reading of the San Martino in Pentilis hoard. The presence of the Minerva/Cock types and the Aesernia types with the subsequent Man-faced bull issues leads me to think this is a hoard from a transitional phase between the two. I’d be inclined to agree with M. C. Molinari that it predates both the Pratica di Mare and Teano Hoards…
Okay, here’s one more complication. R. Russo in Numismatica Sottovoce proposed that RRC 16, 17, and 23 were single series (23 = double unit, 16 = unit, 17 = half unit) minted at Neapolis after the Battle of Beneventum. This seems too early to me and I hesitate to break RRC 23 away from it Messane mint connection. But neither of these points directly challenge them being a series.
But if RRC 16 was really contemporary with RRC 17 that would detract from M. C. Molinari’s ordering of these three hoards as RRC 16 is present in Pietrabbondante… I find myself leaning more away from Russo’s idea of a series.
Mattingly’s reading of the Pietrabbondante hoard is here but I think it’s mostly out of date given the evidence of the San Martino in Pentilis evidence.
Something seems to have gone wrong in the transcription of the hoard totals in the above publication. Here’s the entry from IGCH:
Note that the number of uncertain have been attributed to Neapolis above and the 126 of Neapolis have been missed out. I don’ t think it overly affects the interpretation of the hoard in source publication. The original publication of the hoard with all the details has been digitized, although it takes forever to load.